Urine-Soaked Eggs, A Chinese Treat

Urine-Soaked Eggs, A Chinese Treat

It’s the end of a school day in the eastern Chinese city of Dongyang, and eager parents collect their children after a hectic day of primary school.

But that’s just the start of busy times for dozens of egg vendors across the city, deep in coastal Zhejiang province, who ready themselves to cook up a unique springtime snack favored by local residents.

Basins and buckets of boys’ urine are collected from primary school toilets. It is the key ingredient in Tongzi Dan “virgin boy eggs”, a local tradition of soaking and cooking eggs in the urine of young boys, preferably below the age of 10.

A man walks into a primary school toilet where containers are placed to collect urine passed out by boys, in Dongyang, Zhejiang province

There is no good explanation for why it has to be boys’ urine, just that it has been so for centuries. Though practically speaking, it would make sense to use the urine of young boys if the goal was to diminish potential pathogens like sexually transmitted infections.

The scent of these eggs being cooked in pots of urine is unmistakable as people pass the many street vendors in Dongyang who sell it, claiming it has remarkable health properties.

“If you eat this, you will not get heatstroke. These eggs cooked in urine are fragrant,” said Ge Yaohua, 51, who owns one of the more popular “virgin boy eggs” stalls.

“They are good for your health. Our family has them for every meal. In Dongyang, every family likes eating them.”

It takes nearly an entire day to make these unique eggs, starting off by soaking and then boiling raw eggs in a pot of urine. After that, the shells of the hard-boiled eggs are cracked and they continue to simmer in urine for hours.

Vendors have to keep pouring urine into the pot and controlling the fire to keep the eggs from being overheated and overcooked.

Ge said he has been making the snack, popular due to its fresh and salty taste, for more than 20 years. Each egg goes for 1.50 yuan ($0.24), a little more than twice the price of the regular eggs he also sells.

Read the original Reuters article here.

More References:

Hunger and technology: Egg preservation in China

Enhancing the Value of Eggs: How to Make Balut and Century Eggs

What are century eggs?

Urinalysis – The Composition of Urine.

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